The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2002
Filed:
Oct. 22, 1999
Thin film magnetic head having magnetic yoke layer connected to magnetic yoke piece of reduced width
Minoru Hasegawa, Kawasaki, JP;
Syuji Nishida, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A thin film magnetic head comprises a magnetic yoke piece exposed at a medium-opposed surface adjacent a gap layer. A magnetic yoke layer is connected to the magnetic yoke piece at a position retracting from the medium-opposed surface. The tip end of the magnetic yoke layer is exposed at the medium-opposed surface. A non-magnetic layer is interposed between the tip end of the magnetic yoke layer and the magnetic yoke piece at the medium-opposed surface. The non-magnetic layer serves to space the tip end of the magnetic yoke layer away from the other magnetic yoke layer which is separated by the magnetic yoke piece and a gap layer, for example, from the magnetic yoke layer. It is possible to reduce a magnetic field directed to the other magnetic yoke layer from the edges of the magnetic yoke layer protruding in the lateral direction of a data track. Such magnetic fields from the magnetic yoke layer hardly induce magnetic reversal on a magnetic recording medium such as a magnetic recording disk or tape.